John McCallum
COO at Singletto | Scaling breakthrough infection-control tech
- Role
- Chief Operating Officer at Singletto
- Location
- Seattle, WA, US
- LinkedIn followers
- 500 followers
About John McCallum
I lead organizations through complexity — helping teams and customers translate strategy…
Experience
Chief Operating Officer
May 2025 — Present
As Chief Operating Officer at Singletto, I lead operations, go-to-market, and commercial strategy as we scale Oxafence — the first FDA-cleared, ASTM Level 3 surgical mask with built-in antiviral protection.My focus is on translating innovation into impact: building the systems, partnerships, and momentum needed to bring Singletto’s technology to the frontline of care. I’m proud to help shape our next phase of growth alongside a mission-driven team working to raise the standard for clinician protection.
Skills
- Marketing
- Project Management
- Integration
- Consulting
- Leadership
- Strategic Planning
- Cross-Functional Team Leadership
- Crm
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